The effect of a finite two-photon detuning on the quantum tricriticality and phase transitions in a spin-orbit coupled Bose gas

doi:10.1142/S0217984918503694

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	The effect of a finite two-photon detuning on the quantum tricriticality and phase transitions in a spin-orbit coupled Bose gas
	Chen, Lei 1; Xu, Xingran 2,3; Kang, Shuai 1
刊名	MODERN PHYSICS LETTERS B
	2018-10-30
卷号	32 期号:30 页码:11
关键词	Spin-orbital coupling quantum tricriticality phase transitions
ISSN号	0217-9849
DOI	10.1142/S0217984918503694
通讯作者	Chen, Lei(chenlei@alum.imr.ac.cn)
英文摘要	In the current experiments, realizing the synthetic spin-orbital coupling (SOC) with ultracold atoms, a finite two-photon detuning (TPD) is present. However, in most relevant theoretical studies so far, the TPD has been assumed as zero. Here, we investigate how a finite detuning affects the ground phase diagram in a Bose gas with equal-weight Rashba and Dresselhuas SOC. We show that the single-particle dispersion relation in the presence of a finite TPD can be significantly modified compared to the case with zero detuning, which gives rise to experimentally observable effects on quantum tricriticality and phase transitions. In particular, the zero-momentum phase that can arise for a zero TPD becomes unstable against a finite TPD and disappears. Our results are relevant to the current cold atom experiments using the Raman laser-induced gauge field.
资助项目	NSF of China[11647092] ; Science Foundation of Guizhou Science and Technology Department[QKHJZ[2017]1202] ; Science Foundation of Guizhou Science and Technology Department[QKHJZ[2018]1178] ; Science Foundation of Guizhou Provincial Education department[QJHKYZ[2017]087] ; Doctoral Foundation of Zunyi Normal University[BS[2015]10]
WOS研究方向	Physics
语种	英语
出版者	WORLD SCIENTIFIC PUBL CO PTE LTD
WOS记录号	WOS:000448838000009
资助机构	NSF of China ; Science Foundation of Guizhou Science and Technology Department ; Science Foundation of Guizhou Provincial Education department ; Doctoral Foundation of Zunyi Normal University
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/130093]
专题	金属研究所_中国科学院金属研究所
通讯作者	Chen, Lei
作者单位	1.Zunyi Normal Univ, Sch Phys & Elect Sci, Zunyi 563006, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Liaoning, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Chen, Lei,Xu, Xingran,Kang, Shuai. The effect of a finite two-photon detuning on the quantum tricriticality and phase transitions in a spin-orbit coupled Bose gas[J]. MODERN PHYSICS LETTERS B,2018,32(30):11.
APA	Chen, Lei,Xu, Xingran,&Kang, Shuai.(2018).The effect of a finite two-photon detuning on the quantum tricriticality and phase transitions in a spin-orbit coupled Bose gas.MODERN PHYSICS LETTERS B,32(30),11.
MLA	Chen, Lei,et al."The effect of a finite two-photon detuning on the quantum tricriticality and phase transitions in a spin-orbit coupled Bose gas".MODERN PHYSICS LETTERS B 32.30(2018):11.